摘要
为有效了解加速度极端环境下软物质的失稳机制,保障环境下软物质的性能安全。采用离心试验,结合有限元软件ABAQUS进行有限元数值模拟,选取聚丙烯酰胺作为软物质模拟材料,分别把不同对照样本进行了线性失稳分析。获得了软物质材料参数剪切模量、密度和样本厚度与失稳临界荷载的关系。线性屈曲分析结果表明,软物质的失稳临界载荷与样本厚度和密度成负相关,与剪切模量成正相关,与方形样本的边长无关。
The instability mechanism of soft materials under extreme acceleration environment is investigated to en⁃sure the performance safety of soft materials.The centrifugal experiment and finite element software ABAQUS are used for the numerical simulation.Polyacrylamide is selected as the soft material to conduct the linear instability analysis of different control samples.The relationship of the shear modulus,the density,sample thickness of soft ma⁃terials,and the critical load of instability is obtained.The linear buckling analysis results show that the critical load of the soft material is negatively correlated with the thickness and density of the sample,positively correlated with the shear modulus,and independent of the side length of the square sample.
作者
张素敏
ZHANG Sumin(College of Civil Engineering and Archiecture,Zhejiang University,Hangzhou 310058,China)
出处
《低温建筑技术》
2023年第7期51-54,59,共5页
Low Temperature Architecture Technology
关键词
加速度极端环境
软物质
聚丙烯酰胺
acceleration extreme environment
soft matter
polyacrylamide
